They should just ban the assholes: they don't provide anything to the community that is worth the pain. Unless you are after just raw numbers, and even then you would be better off just buying views
If you cater for assholes, you will get a community of assholes.
P.S. I just saw this very enlightening video on the topic: apparently in japan the video watching community is almost entirely comprised of asshole (or they behave like assholes when videos ar concerned, which, in the end, is just the same) https://youtu.be/5tRmInqoFRk